Gas burner



A. W. MORSE GAS BURNER July 11, 1933.

Filed Aug. 24, 1931 INVENTOR.

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WN um www J @w i www NM. MN ww uw QS S wvl mm mw Nm N mv D Q' Nv l. NNwww N mw mm. W* mv s@ m l Patented July 11, 1933 UNITED VSTATES PATENTosi-*ice ALBERT W. MORSE, OF FOREST HILLS, NEW YORK GAS BURNERApplication ledAugiist 24, 1931. Serial No. 558,909.

It is the particular object to provide such a burner with means tovregulate the amount of atmospheric air dra-wn into it by the velocityl@ of the gas jet incertain predetermined proportions to each otherduring a unit move.- inent of an operating lever or the like. An-

other object is to provide an additional inq u let for atmospheric air`between the burner and the furnace forming a structural part Vof aburner-support, through which secondary air isdrawn by the natural draftof the furnace or boiler assisted by the velocity o of the aforesaidcombined gas and primary 9 air mixture, and to` interlock the gas,primary and secondary air. That is, the invention resides in meanswhereby a fixed proportion between a primary and secondary air andthe'05 gas supply can be established and an operating screw or lever can bemoved a fixed vdistance while the gas and primary and secondary air canbe adjusted to desired proportions independent of the fixed travel ofthe 'saidl lever or screw.

39 This application is in fact an adaptation of the principles ofconstruction and operation brought out in my copending applicationsfiled, respectively, April 2S, 1931, Serial #533,407 and July 9, 1931,Serial #$549,656.

40 Fig. 1 -is a vertical longitudinal sectionalV view through a gasburner embodying the principles of the invention;

Fig. 2 is a cross sectional view along the 45 plane of line 2-2 in Fig.1;

Fig. 3 is a fragmentary horizontal sectional view along the plane ofline 33 in Fig. 2;

Fig. 4 is a fragmentary elevational view of 50 part of the `operatingmechanisms of the burner;

Other objects will become apparent in the.

Fig. 5 is a fragmentary cross sectional view through the airregister atthe outletend of the burner from which a furnace plate and combustionblock have been4 omitted; and

Fig. 6 is a fragmentary elevational view 55 of the gas burner.` f

1 Like characters of reference denote similar parts throughout theseveralviews and the following specification.

10 is a substantially tubular burner casing or inspirator, having anenlarged bowl yshaped inlet 11 and an eXteriorlyV threaded portion 12adjacent thereto. Supported in the center of the inlet bowl 11 by meansof Iribs 13 and a tubular bracket 14 is a bush- 65 ing or gas nozzleholder 15. The annular space around bracket 14 and the inside Vof bowl11 forms an inlet 16 for primary atmospheric air into the inner ormixing portion 17 ofthe inspirator 10. Screwed into 70 the outlet end ofthe gas ynozzle holder is a gas nozzle 1 8 having a small outlet 19 andyan enlarged inlet end 20 converging toward the outlet 19. The inletendof the holder 15 is' tapped to receive one end of a gas tube 21;"Thecentral portion of the holder 15 is provided with a central support 22for a gas regulating spindlev23. 24 are a number of ports through thesupport 22 around the spindlev 23 and connecting the 80 inlet and outletof the nozzle holder 15. 'The other end ofthe gas tube 21 is threaded toreceive aT 25, having an inlet 26 at its bottom. 27 is a stufhng boXgland in the T,

opposite its connection to the gas tube, the

gas regulating spindle 23 projecting through the T and gland 27outwardly thereof and` being threaded at 2 and provided with prefierably a screw driver slot 29 at its end. '30

is a primary air shutter of substantially conical shape, its largeannular base adapted to contact with the end faces of the inlet bowl 11of the inspiratorand its apex being tapped to receive one end of atubular guide 31 which is concentric with and preferably 95 slidinglyengages the outside of the gas tube 21. The other end of the guide'isthreaded at its outside at 32. i

Fastened toa projecting lug 33 of the inlet bowl 11`of the inspiratorbymeans of suitlo@ able bolts 34 is a bracket 35. This bracket is bentupwardly at its extreme end. at 36 in tubular shape to receive a fulcrumpin 37.

3S is a substantially U-shaped lever straddliiig both sides of end 36 ofthe bracket 35 and is fulciuined on pin 37. 39 is a handle piecefastened to lever 88. Lever 38 has at each side outwardly extending lugs40 and 41 spaced, respectively, above and below the fulcrum pin 37.These pairs of lugs are bored out to receive each a screw 42 disposedparallel to the lever 38, having a head 43 below the lower lug` 41 andasquare 44 for manipuf 'nutted hrough inlet 26, T 25, gas tube 21,

lating with a wrench at its top and a lock nut 45 above the uppei' lug40 to hold'rthe screw in a lixed position.

. 46 is a substantially square block in threaded engagement with one ofthe screws 42 and l disposed between the lugs 40* and 41its wide surfaceadjacent the levei preventing a turning movement when screw 421 isrotated about Y its axis which thus forces the block up and down whenthe screw is turned. 47 lis a pin projecting outwardly from the blockaway from the lever. 48 is a lever link 'connecting the pin 47with asimilar pin 48a forming part of a link 485 which is sciewed over thethreaded. end 28 of the gas regulating spindle 23.

49 is a square block similar to block 46 and similarly disposed uponscrew42 at the other side of the lever 38, having also a pin 50projectingvtherefrom. 51 is a threaded sleeve screwed onto theexternally threaded end 32 i of the guide 3l. Sleeve 51 is provided witha pin 52. A lever link 53 connects pins 50 and 52. Y y

The inspirator ktube 10 is screwed into a support 54 which consists of acircular flange 55 fastened to a furnace pla-te 56 by means of screwsand nuts 57. 5S is a central aperture through flange 55 in alignmentwith the inspirator 1() anda combustionblock 59 iinmediatelyadjacent toit. are'lugs carrying a cup-shaped collar 6-1into the center.

of which is screwed the inspirator 10ffor the purpose of adjustablysupporting the saine and thereby the whole burner struct-ure. The

space between Vflaiige55 and the collar 61,` defined by the lengthoflugs 60, forms a passage around the inspirator 10` for secondary airto enterk the boiler or furnace through-aperture v58. 62 is acylindrical shell slidably Vengaging the outside of collar 61 and lugs60 forming an air register. therewith and being adapted to closeentirely the space between collar 61 and flange 55. each side shell 62has a U-shaped groove 63 ithin which isslidably disposed a head 64 of Yascrew 65, the stem of which travels within an elongated slot 66 intheshell'62.

67 is a yokecoinprising arms 68 and a center collar 69 which is slippedover lever handle 39 and adjustably secured thereto by means of a setscrew 70.' 68a are lugs projecting from the arms 68 for thepurpose ofsupporting the same against lever 38. To

vthe lower enns of the arms 68 is secured by ports 24, past theconically shaped end of the gas spindle 23, through gas outlet 19 intothe inspirator 10, there, by reason of its velocity, to draw inatmospheric primary air through inlet 16, which mixes with the gaswithin'the inspirator 10 and is discharged therefrom at .its outlet endpassing into the furnace through aperture screwing down the block 46from a position ljust below the upper lug 40 to a positionin line withtheV fulcrum pin 37, the opening betweenthe conical end of the gasspindle 23 and its seat which is adjacent the` gas outlet 19 of thenozzle 18 canv be adjusted to regulate the amount of gaspassedtherethrough from a maximum to minimuml t can readily be noted that withor zero. the block Y46 in its vtop position, when the lever 8S isinovedfrom a closed to an open position, the link 48 and consequently the gasspindle 23 has its longest travel, while when the block 46 is screweddown tobe/ inV alignment with fulcrum pin 37 there will, be no movementat all of the link 48 and therefore no movement of the spindle 23.

Similarly, when the block 49 is in its top position. the lever link 53,the threaded sleeve 51. thc guide 31 and the primary air shutter 3()have `the longest travel, resulting in the largest air opening,` whilewith the block 49 screwed down to align with pin 37 there will he nomovement of the shutter 3() at all.

62 vor, in other words, the openingor closthereby opening or closingthe'air registerV completely, adjustment ofthe air register lyingbetween these two'points.

It is obvious, therefore, that with aunit movement of the lever 3,8,that is at a lixed fullstroke, various adpistinents ofgas and primaryair can be had by screwing down Iuthe same manner, the travel of theshell iis more or-less blocks 46 or 49 towards the center of the fulcrumpin 37, and that by raising or lowering yoke .67 the amount of secondaryair may be controlled. This makes `possible thecross connecting of abattery oi' burners by connecting all levers of the burners to a motordriven automatic control or tor ether purposes. This can easily beeffected because each burner or each set of burners can stillv beadjusted to minimum as Well as maximum flame conditions, but

with a. maximum (constant) stroke of the lever.

Attention is also drawn to the independently adjustable gas regulatingspindle 23. This is a vital construction detail because it permits smallvariations in the assembly of the complete unit, by simply inserting ascrew driver into the slot 29 and turning the spindle until the gasopening around its conilal inner end adjacent the gas outlet 19 has beenproperly adjusted.

Moreover, While the construction shown is particularly applicable toboilers or furnaces with stack draft, it may also be used in combinationWith similar devices Where no stack draft is available. In suchcase thejet velocity of the flame induces through the register an amount of airWhich dependsv upon the combined velocity of the primary air and gas.

Various changes in form, proportions and minor details of constructionmay be resorted to Without departing from the principle or sacrificingany of the advantages of the invention as defined in the appendedclaims.

What I claim as new, is: Y

l. A gas burner comprising an inspirator tube having a gas connection,an air shutter at the inlet end of saidtube, a gas valve, operatingmeans for the said shutter and valve and means to obtain variable rangesof adjustment for the said shutter and valve 1n predeterminedproportions to each other from zero to maximum with a constant travel ofthe Vsaid operating means.

tions to each other from zero to maximum during a unit travelv of thesaid operating means.

3. A gas burner comprising an inspirator tube having a gas connection,an air shutter at the inlet end and an air register intermediate theinlet and the outlet of the said tube, a gas valve, operating means forthe said shutter, valve and register, and means to obtain variableranges of adjustment for the said shutter, valveand register inpredetermined proportions to each other from zero to maximum With aconstant travel of the said operating means.

4t. A gas burner comprising anv inspirator Vtube having a gasconnection, an air shutter at the inlet vend and an airregisterintermediate the inlet and the outlet of the said tube, a gas valve, alever fulcrumed to the said tube adapted to operate the said shutter,valve vand, register, andadjusting means for varying the travels of thesaid shutter, valveand register independently of and in predeterminedproportons to each other from zero to v maximum during a unit movementof the saidv connecting the said spindle and guideto the Y said leverindependently of each other for varying the travels of the said shutterand spindle in predetermined proportions to eachv other from zero tomaximum during a constantY travel of the said lever. i

6. A gas burner comprising an inspirator tube, a gas nozzle at itsinlet, a gas regulating spindle, a gas tube around the said spindle Yhaving a gas connection, the said spindle proj ecting outwardly of thesaid tube, a tubular guide slidingly disposed around the said gas tube,an air shutter attached to the said guide and adapted to control vtheinlet of primary air to the said inspiratorV tube, a registerfor thecontrol of secondary air around the said inspirator tube intermediateits inlet and outlet, a lever fulcrumed to the said inspirator tube, andmeans adjustably connecting the said spindle, guide and register to thesaid lever independently ofeach other for varying the. movements of saidspindle, guide and register in predetermined proportions to each otherVfrom zero to maximum With a ixed movement of the said lever. f

' In testimony whereofl I have hereunto set my hand.

ALBERT MORSE.

